What is the leakage rate of the glove box?

The leakage rate of glove boxes is a critical indicator, referring to the air leakage velocity per unit time under a set pressure, typically at a negative pressure. It is usually expressed as cubic feet per hour, or volume per hour.

For instance, when the box was compressed to -10 mbar, 1 liter of air leaked into a single-station glove box (with a volume of 750 liters) within 4 hours, resulting in a leakage rate of 1 liter/750 liters/4 hours = 1 ≤ 3000 ≤ 0.03% per hour.